Internal-combustion engine.



l. M. PRHVlM,

INTERNAL COMBUSTION ENGINE.

APPuc/mon FILED MAY3,1912.

. 5,159,225. Patented Aug. 417, 1915.

2 SHEETS-'SHEET l.

WITNESSESI J. M. PRIMM.

INTERNAL COMBUSTION ENGINE.

APPLlcATmN FILED MAY s, 1912.

1, l 50,225., v Patented Aug. 17, m5.

2 SHEETS-SHEET 2.

FUSE- FIRE- INVENTOR s refr FFE'CE.

JOHN PRIME/I, O3? DHEA., OHIO, ASSIGNOR TO THE POWER MANUFACTURINGCOMPANY, GE' LIMA, OHIO, A CORPORATION OF OHIO.

INTERNAL- COMBUSTION ENGINE Specification of Letters Patent.

Patented ue. 17, 1915.

Application iled Ivay 3, .1912. Serial No. 694,811.

State et Ohio, a citizen oi' the United States, -i1a`ve invented ordiscovered cert-ain new and useful improvements in internal-(TombustionEngines, of which improvement the ioln lowing is n specification.

iiy ini'ention relates to internal combusiou engines, and the objectthereof to increase the eiiieiency of operation and simpiieity orconstruction oi such engines.

My invention, although not iiinited to tin; use of uny'specitichydro-carbon as a fuel, is particularly Well adapted to the use ofliquid petroleum, and its adaptation toeuch use is iiiuetrated in theaccompanying drawin s. u inch term part oi nij-f speeiiication.

in these drawings, iiigure i, is an eievetion of the preferred form oi"my engine; Vin. 2 ,is an enlarged rerticii sectional View ot'vtheoperating cylinder; ifigg. is a plan View ofthe oil pump and waterfeeding mechanism; and Fig. i a sectional View i un 'the iine iwf-IV,

the several .figures lilac numerals designate ii ie parts.

il VG ie engine iiiustrated herein is ol the cycle type, and in itsveneral winstrufr tion ceneiets ot a closed 'e wi ich n n indexl iwithin trunk piston 2 reciprocate@ mid, ie piston rod 3 und connectionzou l The c i'iiiider is. de

Yhe si' ift fiber b nii' chamber and 3 :an

r4 d the si ne of the pier wai vacuum et ti; is drawn into the chainnport l2 when ihe :said

uncovered by the :iston ton thereof l stroke et the piston c m presses,within the chamber i3, air7 previousljiY admitted into the said chamberthrough the port 15, and oilmpor7 pumped therein through the tip 8.ThisA compressed combustible mixture then becomee` ignited by theauxiliary igniter, during the starting of the engine, and by theignition plate 9 at'tcr the engine has been running` long enough to heatthe said plate. In the return or power stroke of the piston, the airtaken into the chamber 6 is compressed, and, following' upon theopeningmi' the exhaust port 13, the air inlet port l5 is opened so thatcompreesed air may enter chamber 6, the air being deflected to morehorizontally by the abutment 1G, and becoming eii'ective both to drivethe gases ot' combustion from the ehninber and to furnish oxygen for thenext combustible l'nixture. And in this cycle oi operntion the pump 7Forces a finely diviiied spray the chamber (i, Where the oii becomesvaporized by the heat oi' the said chamber and the plate 9; and the pumppreferably arranged to act as the piston 2 approaches the .i'oriiard endof the chamber (5.

lin the operation oi enejincs :such as are water-1aeketing onriY theportion of the indcr that incioses the coinbution chamber, and admittingKater to the air-cour preesien ehainiwr aflter the pistou has movedthrough the gi katei portion of itey forward or ige-compleasing stroke,such water beei'nning vaporized by the uncooicd cyiinder walisSurrounding the aiucompreesion chnmber and becoming mixed with tic airaiso iet into such chamber, the mixture be ing tberiaiter charged intothe combuetion chamber to form a part et. the combustible mixture. thewater which i use tor this purpose i5 preterabiy teken from the Water.et il ot' the forward part oi' cylinder l, i -eeted in preiieterminedquantities a"ne chamber by means oi` the eil of oil through the tipS.intoA collar and against a shoulder 20, secured to the said plunger.This plunger 17 may also be provided with a second shoulde,` 32, adaptedto' be engaged by` the collar 18 in order-.to limit the extent of theoutward movement yof they said plunger. Oil, from a suitable'source andunder a suitable pressure, may be admitted 'to the chamber 16 throughthe opening 21, there being a valve 22 covering the said opening; andthe extent of movement of the said valve may be adj usted by a suitableadjustingscrew 23, against the inner end of Which the stem of the saidvalve bears when oil is entering the chamber 16. The oil pump isoperated by the rod 10,v which may be reciprocated, as describedabove,by the governor-controlled eccentric 24, the arrangement being such thatthe transverse movement of the rod 10cis inversely proportional to therotary speed oi" the shaft 5. The construction oi' thegovernor-controlled eccentric, shown herein, is

described and claimed in my Patent No. 1,057,271 and need not here bespecifically described.

In order to control the admission of Water i to the chamber Gaby meansof 'the above described oilpump, I preferably provide a 'valve 25,adapted to control the communica.-

to the shoulder 20' of the lplunger 17 by means of a link 28. Thearrangement of this construction is such that, when the plunger' 17 isin its outward position, the valve 25 is closed, and that, when theplunger is moved to the left by the rod 10, 'the said valve Will beopened for the time, and according to the extent of the movement of thcsaid plunger. It 'will 'readily be seen that the quantity of Water-vapormixed with the air in the chamber 6a is, for each stroke of the engine,in proportion to the quantity of oil pumped intothe chamber 6.

To the end thatthe operation ofthe pump may be stopped when desirable,'asuitable bell-crank lever having an arm 29 and an abutment 30 may bepivoted in such a position that the abutment .30 may be brought to bearagainst the shoulder 20 of the plunger 17, and hold the said plungerWithin the chamber- 16. Also the pipe 26 may be provided with a secondvalve 31, which may be closed When the bell-crank lever 29,'

is, as is shown in the drawings, made edective to stop the operation ofthe pump.

In the operation of the engine the reciprocating rod 10 is preferably sotimed that its forward pump operating movement will take place as thepiston 2 moves forwardly in the cylindricalchamber 6. @ilenters thechamber 1 6 through the opening 9:1 as the plunger 17, vunder the actionof the spring .y forwardly moving ignition plate 9. Within the saidchamber 6 the sprayed oil becomes vaporized by the heat of the chamber,and mixes with the previously admitted mixture of air and Water-vapor;and, when the mixtureof oil-vapor, Water-vapor and air becomessufficiently compressed it -is ignited,A

as described above, either by the igniter 14 or `the plate 9.

The governor controlled eccentric 24 ef' fects the reciprocation ofthevrod l0; and" of this constructionv it Will be understood thattheeXtent of thei reciproca-tion of thel rod diminishes as the speed ofthe engine increases, with the result that proportionately less oil andless Water are admitted to their respective cylinder chambers. I claimas my invention:

1. In an internal combustion engine, thef combination of a cylinderprovided With supply and exhaust ports, a piston movable `therein anddividing said cylinder into combustion and air-compression chambers, apassageway affording communication 'between said chambers, means foradmitting air into said compression chamber, means for admitting waterinto said compression chainber in quantities varying according to thespeed of reciprocation of said piston and after the piston has traveledthrough the greater part oit its forward or charge-compressing stroke,the Water vaporizing and mixing 'with the air 1n sald compressionchamber, and means for charging said mixedv air and Water vapor intosaid combustion chamber to form: a part of a combustible minture.

2. In an internal combination of a cylinder provided with supply andexhaust ports, a piston movable therein and dividing V.said cylinderinto comcombustion engine, the i bustion and air-compression chambers, apassageway affording communication between said chambers,a single meanseffective after said piston has traveled through the greater part of itsforward or fuel-.compression stroke, for admittin Water and fuel intosaid compression an combustion chambers respectively, and in quantitiesvarying according tothe speed of reciprocation of said,v piston, theWater becoming vaporized by the heat oi' the cylinderwalls, means forcharging air into said compression chamber to become mixed vvith theWater vapor therein, and means for admitting said mixed air and Watervapor into said combustion chamber to form apart of a combustiblemixture.

3. In an internal combustion engine, the .combination ofl a cylinderv'provided with supply and exhaust ports, a piston movable therein endiii'idinv seid c' iinder into combustien and air-Compression ehanihers,a passageway aiording cominuniciiion between said ciiambes, means forcooling the Weils of said eyiinder except the portion thereof surronninici eir-co1npression chamber, ineens einiiing air into seid ceinpressionchenihi ne 'for adi'niting Writer into the so ien chamber quantitiesVarying inieieciv with. he speed of reciprocation of said piston afterseid piston has traveled hrengh ehe greater pare of its fo- Ward 'er ci:ige-compressing sroie, Snc-h Water hee-@ming Vapour/Zed. by the uneooiedyWells of Said cyiinder and mixing with said means for charging said "erwiper into como iorin' e peri o e comadmitted nir, and mixed airbueiihie i v in if comhusinon engine, the -coinhine i eyiinder providedwith supply and exhaust ports, and a piston movahie Within said cyiinderand dividing it into communicating combustion and air-compressinOchambers, e Water supplyconduit opening inko the air-compressing portionof said cylinder, e valve controlling the iow of Water through'suchconduit, a reciprocating oii injection pump adapted to ineermittently.feed charges of fuel into Said combustion chamber, and operativeconnection between said oil pump and Said Valve whereby the How of Wzierhrough said conduit into said air-compressing chamber is controlledsimultaneously with the feeding of the fuel into said combusion chamber.

y in testimony whereof have hereunto set my hand.

JOHN M. PRIMM. iiJtneSses M. Brunn@MAN7 JOHN L. CABLE.

